Method for selectively treating hair

Details Method for selectively treating hair Method for selectively treating hair

A - Human Necessities

61

K

A61K 8/30 (2006.01) A61K 8/64 (2006.01) A61Q 5/00 (2006.01) A61Q 5/06 (2006.01)

Patent

CA 2725234

This invention relates to methods and kits for selectively depositing a treatment agent on hair without depositing the treatment agent on the skin. The method involves sequentially treating the hair with a cationic compound selected from cationic peptides, cationic proteins, cationic polymers, cationic dyes, cationic pigments, or mixtures of these. in a composition with a pH from about 3 to about 6, followed by treatment with an anionic treatment compound selected from anionic particles, polymers, proteins, peptides, dyes, or mixtures of these in a composition with a pH of from about 5.5 to about 12. By this method, the treatment agent becomes deposited on the hair; however, any skin that is also contacted by the treatment compositions remains substantially untreated.

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